Anker Nano Magnetic Power Bank
- Portable Power Bank
- 5 amps
- 5 amps
- 15 watts
A well-specified slim backup battery for iPhone users who want Qi2 magnetic charging on the go, provided expectations for a 5,000mAh cell stay realistic.
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How it ranks among the 18 portable power banks we track
4.2★ across 4,000 Amazon ratings, Bayesian-smoothed toward the category average.
4,000 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
10,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 18 portable power banks we track - how the scorecard works · full portable power banks data report. Confidence: high - strong rating volume and complete data.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 5,000mAh magnetic battery pack rated for Qi2-certified 15W wireless charging, built to a 0.34 inch profile so it stacks flat against an iPhone without adding much pocket bulk.
Anker markets the Nano around thinness first, and the Qi2 certification is the detail that matters more than the wattage number: it is what keeps the magnetic ring aligned to the phone's coil the way MagSafe does, instead of the loose fit that non-certified magnetic packs sometimes have. Anker is explicit that it is tuned for iPhone and does not recommend it for Android handsets.
- Qi2-certified 15W magnetic wireless output
- 0.34 inch thin profile
- Graphene cooling with dual NTC temperature chips
- USB-C port for wired charging up to 20W
Who it's for
IPhone owners, particularly on the 15, 16 or 17 series, who want a slim top-up battery that snaps on rather than plugging in. Less suited to Android users, since Anker specifically advises against that pairing.
Strengths and trade-offs
Drawn from this product's published specifications.
- Slim 0.34 inch profile for pocket carry
- Qi2 certification keeps magnetic alignment consistent
- USB-C port doubles as wired charging output
- Built-in temperature control for safer charging
- Not recommended for Android phones
- 5,000mAh gives a partial charge, not a full one
Performance notes
The Qi2 magnet ring keeps the coils lined up for a steady 15W transfer, and Anker quotes roughly 42 minutes to reach 25% on an iPhone 16 Pro under lab conditions, so real-world speed will vary with case thickness and ambient temperature. Graphene cooling and dual NTC chips are there to hold the surface under 104F, and a USB-C port lets the same pack recharge itself or top up another device at up to 20W.
Specifications
| Brand | Anker |
|---|---|
| Model | A1665 |
| Dimensions & fit | |
| Battery Weight | 4.3 ounces |
| Item Dimensions L x W x Thickness | 4 × 2.8 × 0.3 inches |
| Item Dimensions | 4 × 2.8 × 0.3 inches |
| Capacity & performance | |
| Battery Capacity | 5 amps |
| Output Wattage | 15 watts |
| Output Current | 3 amps |
| Rapid Charging Performance | 100% in 104mins |
| Power & efficiency | |
| Amperage | 5 amps |
| Power Source | Corded electric |
| Battery Cell Type | Lithium Polymer |
| Voltage | 5 volts |
| Battery Charge Time | 1.7 hours |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | iPhone |
| Compatible Phone Models | iPhone 16/15/14/13 Series |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 2 years |
| Other details | |
| Connector Type | USB Type C |
| Number of Ports | 2 |
| Number of Batteries | 1 |
| Number of Items | 1 |
| Antenna Location | Phone |
| Other Special Features of the Product | Wireless Charging |
| Mfr Part Number | A1665 |
Other Anker portable power banks
How it compares
This product against the closest alternatives we track in portable power banks.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Anker Nano Magnetic Power BankThis product | 4.2 / 5 | 4,000 | 4.3 / 5 |
| INIU Portable ChargerIniu | 4.6 / 5 | 29,000 | 4.6 / 5 |
| Miady 2-Pack Portable ChargerMiady | 4.5 / 5 | 98,300 | 4.5 / 5 |
| iWALK Portable Charger for iPhone 17/16/15 USB-C Small Power Bank 20W 4iWALK | 4.3 / 5 | 13,400 | 4.4 / 5 |
| 2026 2-Pack 10000mAh Portable Charger Battery Pack with Built in CablesFancyBean | 4.5 / 5 | 2,400 | 4.4 / 5 |
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Questions about the Anker A1665
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Can this be used with an Android phone?
Anker does not recommend it for Android, noting that fit and alignment differences can affect placement or slow charging speed.
How fast does it charge an iPhone?
Anker cites about 42 minutes to reach 25% on an iPhone 16 Pro under internal lab testing, though real results will vary.
Does it get hot during use?
Anker says graphene cooling and dual NTC chips keep the surface below 104F during charging.